1. Easy to Read and Use: The quilt rulers are made of transparent acrylic material, allowing you to easily see the fabric beneath. The dual color numbers and markings make it simple to read and align, whether you're left handed or right handed, ensuring precise cuts. 2. Durable Material and Easy Storage: These quilt rulers are crafted from quality 3mm thick acrylic, making them sturdy and long lasting. Designed with a hanging hole, they help keep your workspace tidy. 3. Precise Cutting: Vibrant, accurate markings and grid lines ensure precise cutting. The square quilt rulers feature a 30° 45° 60° angle system, helping you create various patterns like squares, triangles, parallelograms, trapezoids, and more. For the quilting experience, please remove the protective film from the ruler! 4. Useful Sewing and Quilting Accessory Set: Includes square quilt rulers in multiple sizes—12.5' x 12.5', 9.5' x 9.5', 6' x 6', 4.5' x 4.5', and a large 30cm x 5cm rectangular ruler. The non slip rings keep the rulers and templates securely in place for accurate cutting, allowing you to move and position them quickly and effortlessly.